Concrete curb construction



'Oct. 21 1924.

H. E. DILLON CONCRETE CURB CONSTRUCTION Original Filed Aug. 21 1919 HGAY Patented Oct. 21., 1924.

UNITED STATES HARRY EDGAR DILLO'N, OF PHILADELPHIA, PENNSYLVANIA.

CONCRETE CURB CONSTRUCTION.

Application filed August 21, 1919, Serial No. 318,885. Renewed March 22, 192i.

To all whom it may concern.

Be it known that I, HARRY EDGAR DILLON,

a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Concrete Curb Construction, whereof the following is a specification, reference being had to the accompanying drawing.

My invention relates to curb structures formed .of sections which may be precast or molded remote from the regions in which they are to be assembled, and it is the object and efl'ect of my invention to provide means for conveniently and rigidly assembling them in monolithic relation.

As hereinafter described, my invention in cludes the provision of curb sections with stepped ends adapted to overlap, and tubular metallic reinforcing members. imbedded in one of said sections and fitted to corresponding sockets in the complementary and of another section; said reinforcing members serving as conduits adapted to convey cementing means to an interior cavity, between said sections, formed by complementary recesses in the respective sections, so that when concrete or other suitable cementing medium is poured in said reinforcing members to fill said recess, the curb sections are permanently interlocked, in monolithic relation, when such cementing medium sets.

An adjunctive feature of my invention is the provision in such curb sections of means to interlock with a gutter slab; so that the gutter line is conveniently predetermined by the location of such curb sections.

My invention includes the various novel features of construction and arrangement hereinafter more definitely specified.

In the drawing: Fig. I is an elevation of a series of precast or molded curb sections conveniently embodying my invention; one

vof theintermediate sections including the with agutter slab. Fig. II is a transverse sectional view of said structure taken'on the lineII, II in Fig. I. Fig. III is a transverse sectional view of said intermei the horizontal reinforcing members indi means above contemplated forinterlocking cated in Figs. I and II. Fig. VI is a .frag mentary plan sectional view taken on the line VI, VI in Figs. I and II, showing means permitting limited longitudinal movement of the connected sections of the structure to allow for expansion thereof. Referring to Fig. I; each of the curb sections 1, 1, may be precast or molded of the same pattern with its oppositely stepped ends 2' and 3, complementary to each other;

so that a longitudinal seriesaof such sections maybe fitted together to form a continuous curb of uniformcross section. Each cess 10. in the upper face of the stepped member 3 offsaid section; so that when the sections are fitted together as shown in Fig. II, said complementary recesses 9 and 10 form a cavity 11 which may be filled with liquid concrete or other suitable cementing medium 12 conducted thereto by pouring the same into said tubular reinforcing members 5; so that, when said cementing medium has set, said sections are interlocked thereby in the relation shown in Figs. I and II. One or more metallic reinforcing membersl8 1nay be rigidly mounted in each section 1, so as to project horizontally in said cavity 11 and the cement block therein.

.Moreovenl prefer to formsaid cavity 11 with an extension 14:, indicated in dotted lines in Fig. I, by providing complementary recesses 15 and 16 in the verticalend faces of said. sections 1 respectively below said stepped member 2 at the inner end thereof,

and at the outer end of said stepped mem ber 3.

' It may be observed that the body of ce menting material in the cavity ll reinforces the joint between said sections. 1 against transverse shearing stresses, and that the body of cementing material. in said cavity extension 14 reinforces the 'oint between said sections a"ainst torsiona stresses such as are impose upon adjoining sections 1 by the effects of frost in the ;material in which said "sections are imbedded. Of course, the tubular members 5 are opposed to all such stresses. g

As shown in Fig. VI, said sockets 6 sub stantially fit the reinforcing members 5 laterally, so as to maintain the adjoining sec tions in a'l-inement, but said sockets 6 are of greater extent than said members 5 longituldiifally', so that limited longitudinal move- 'ment'of the adjacent sections incident to expansiom'maybe permitted, by using a cementi'ng material which remains plastic, However, as shown in Fig. VI, said members 5 a'refsogrouped as 'to prevent relative rotary displacement of the two nonmetallic bodies 1 which they thus connect, and that -'effect 'is'attainable with even two reinforcing members thus fittedin sockets which are of different extent in transverse directions, as shown in said figures; but is not attained 'if'but a single reinforcing member {5 be an'anged as shown in said figure; although such "single reinforcing member "would suffice to prevent lateral displacement of said bodies with respect 'to each other -wh'ile pe'rmitting longitudinal displacement to a limited extent. 7

I prefer to make said cavity 11 rectangw la'r in "vertical cross section, asindicated in II; but said extension 1a of said'cavity "may be cylindrical in horizontal cross section; or either may be otherwise shaped.

Of course, such joints as above described maybe used to connect complementary members of curb sections which are not otherwise constructed or arranged like said sections 1. For instance, precast or molded curb sections 18 may have stepped members '2at'both ends; and the curb sections 19 may have stepped members 8 at'both ends, and joints be [made between the overlapped member's"2-and 3,-in the same manner above described with reference to'the sections 1.

As-indicaitedin Fig. I said curbsections ina-ybe "provided with recesses 2 1 for engagement with, gutter slabs 23, one of which is slio\vn -engag'etl in F III. Asindicated in Figs/land "III; said section 1 mayhave' chiral-sing bars 24 'witheyes 25 extending aid recesses 21 in "positinn' to engage the hoolr'ed ends 2 7 of the reinforcing bars 28 'setdn'saids'labs 23; It*isto"be understood that and gutter slabs'23 may be united in iilon'olithic relation with "said'curb "sections 1 by cementing'm'aterlal 30 poured into said recesses 21. Moreover, the olnts between such curb sections may bethus bridged, and

r'einfcrc ed, by f such "gutter slabs.

Although I prefer to provide the upper eiite'nsiohs which are preferably foram,

inous as indicated in ig. III; that feature of the structure illustrated is not "of the essence of the invention herein claimed.

Although I have outlined, -i-n Fig. III, the curb section 1 as Wider at'the base than at the top, as is usual in stone curbs, and such configuration has the advantage of greater stability than if the curb were of the same width at the bottom as at the top; such de-k tails of configuration are not of the essence of my invention.

Therefore, I do not desire to limit 'myself to the precise details of construction/and arrangement hereinset forth, as it is obvious that various modifications may be made therein, Without departing from the 'essential features of my invention, as dfinedin the appended claims.

I claim: V

1. In a curb structure, the combination with a plurality of 'nonm'etalli c bodies "each forming a unitsecti'on or said structure, with stepped, complementary ends having complementary recesses, adapted to form "an ,internal cavity in said structure; of'a tubular metallic reinforcing-memberextending from one section into another and having-a vent opening into said cavity a "bonding element including" cementing material poured into said cavity I through "said [tubular reinforcing element; whereby the opposite ends of similar sections are interenga'ged by said tiibular members, and are united by said cementing medium; a pair-ofgutterslabre cesses, in the gutter "side 'df the adjoining curb sections; a' gutter slab, bridging adj oining sections and halvingnieinbersz-fitted to 'g'utter slabrccesses in each; and abonding element, "including, cementing :materialfin said gutter slab recesses; wherebys'aidqgutter slab is united inmonolithic relationwvith' adjoining curb sections bridges the joint between them. i

2. In a curb structure, the combination with a plastic body, with stepped, conifementary, longitudinally p1'o jecting niem ers respectively at theupper'anrl lower regions thereof having complementary accesses, respe ctively in the] lower hori Zontal "fac of the upper step member and in 'theiippe'r horizontal face of the -lofwer 'mieinber, and

*haviiig complementary recesses "vertical 'in said'lo wer step In'emberydf -a pair oftnbular metallic reinforcing meinbe'i's rigidly mounted vertically in "said 'i pper in em berynpon respectively opposite sides off-the recess in said member and projecting ibel'ow the latter, but terminating above the b ottoin of said body; the sa ine transversely spaced relation'as said sockets, andagih having'a vent openinginto" said reess aiiid form a conduit for cementing material a pair of metallic reinforcing members rigidly mounted horizontally in said body, so as to project in said recess, between said vertically reinforcing members; whereby opposite ends of such sections are fitted to overlap and to interengage by said tubular extension, and be united by a cementing medium. I

3. In acurb structure, the combination with a plastic body, with stepped, complementary, longitudinally projecting members respectively at the upper and lower regions thereof; having complementary recesses, respectively in the lower horizontal face of 'the'uper step member and in the upper horizontal face of the lower step member, and having complementary reccssesin vertical faces of saidhody, respectively at the innere'nd of said upper step memberand at the outer end of said lower step member, and with a pair of sockets extending vertically in said lower step member; of a pair of tubular metallic reinforcing members rigidly mounted vertically in said upper step member, upon'respectively opposite sides of the recess in said member and projecting below the latter, but terminating above the bottom of said body, in the same transversely spaced relation as said sockets, and each having a vent opening into said recess and forming a conduit for cementing material whereby opposite ends of such sections are fitted to overlap and to in terengage by said tubular extension, and be united by a cementing medium.

4. In a curb structure, the combination with a plastic body, with stepped, complementary, longitudinally projecting members respectively at the upper and lower regions thereofghaving complementary recesses, re-

spectively in the lower horizontal face of the upper step member and in the upper horizontal face of the lower step; member, and having complementary recesses in vertical faces of said body, respectively at the inner end of said upper step member and at the outer end. of said lower step member, and with a socket extending vertically in said lower step member; of a tubular metallic reinforcing member rigidly mounted vertically in said upper step member and projecting below the latter, but terminating above the bottom of said body, and having a vent opening into said recess and forming a conduit for cementing material; a metallic reinforcing member rigidly mounted horizontally in said body, so as to project in said recess; whereby opposite ends of such sections are fitted to overlap and to interengage by said tubular extension, and be united by a cementing medium.

5. In a curb structure, the combination with a plastic body, with stepped, complementary, longitudinally projecting members respectively at the upper and lower regions thereof, having complementary recesses, re

spectively in the lower horizontal face of the upper step member and in the upper horizontal face of the lower step member, and having complementary recesses in vertical faces of said body, respectively at the inner end of said upper step member and at the outer end of said lower step member, and with a socket extendingvertically in said lower step men'iber; of a tubular metallic reinforcing member rigidly mounted vertically in said upper step member and projecting below the latter, but terminating above the bottom of said body, and having a vent opening into said recessand forming a conduit for cementing material; whereby opposite ends of such sections are fitted to overlap andto inter-engage by said tubular extension, and be united by a cementing medium.

6. In a curb structure, the combination with two nonmetalhc bodies havmg complementary recesses in registry with each bridging the joint between them, and each having an opening from its interior into said cavity; and a cementing medium extending through each of said tubular reinforcing members into said cavity; whereby said four reinforcing mem'bersare inter locked with said cementing medium and said two bodies inseparably'connected. I

7. In a curb structure, the combination with two nonmetallic bodies, each having a recess and fitted together with said recesses in complementary relation forming a cavity between said bodies; of reinforcing bars respectively imbedded in each of said bodies and extending in said recesses; a tubular re inforcing member extending in each of said bodies across said 'cavity, transversely to said bars, and having an opening from its interior into said cavity; and a cementing medium extending through said tubular reinforcing member into said cavity; whereby said four reinforcing members are interlocked with said cementing medium and said two bodies inseparably connected.

8.'In a curb structure, the combination with two nonmetallic bodies overlapping each other and each having a recess in com plementary relation to a recess in the other body, forming a cavity between said body; of a tubular reinforcing member extending from one of said bodies to the other. across said cavity, and having an opening from its interior into said cavity; said reinforcing member being wholly within said structure; and a cementing medium extending through said reinforcing member into said cavity; whereby said reinforcing member is interlocked with said cementing medium and said two bodies inseparably connected.

9. In a curb structure, the combination with two nonmetallic bodies in overlapped relation, each having a recess complementary to 'a recess in the other body and in registry therewith, forming a cavity between said bodies; of a metallic reinforcing member imbedded in each of said bodies and extending in spaced relation in said cavity, parallel with the oint between said bodies; one of said bodies having a socket leading from itsexterior to said cavity; and a rementing medium extending through said socket into said cavity; whereby said bodies are interlocked.

1O.-In a curb structure, the combination with two nonmetallic bodies in overlapped relation,- each having a recess complementary to a'recess in the other body and in re istr therewith formin a cavity be-V g y a g tween said bodies one'of said bodies vhaving a socket leading from its exterior to .said cavity; and a cementing medium extending through said socket into saidcavity; whereby said bodies are interlocked.

11. In a curb structure, the combination with two nonmetallic bodies .in overlapped relation, each having two sockets extending transversely to the joint between said bodies and wider in thedirection of the length of said joint than transversely to such length; said sockets in one body being in registry with the sockets in the:other body; tubular reinforcing members extending in said sockets, bridging said joint, substantially fitting said sockets transversely but in spaced relation with said sockets longitudinally with respect to said jointyeach ofsaid tubes having an opening from its interior into the socket in' which it extends; a plastic cementing medium extending through said tubes into their respective sockets; whereby said bodies are vprevented from displacement transverselywith respect to said joint but are free for limited placement longitudinally with respect to said joint; the plurality offsaid reinforcing members being so grouped .as -to prevent rotary movement of said bodies with respect to each other. I

12. In a curb structure, the combination with two nonmetallic bodies in overlapped relation, each having a socket extending transversely to the joint between said bodies and wider in the direction of the length of said joint than transversely tosuch length;

said sockets being in registry with each other; a tubular reinforcinglmember extend- HARRY LEDGAZR ,Dl- LQN- Witnesses ARTH R P GE, V

C ROLYN vE. Remix.- 

